CYStech Electronics Corp.
5A Low Dropout Positive Voltage Regulator
Spec. No. : C512E3
Issued Date : 2003.03.25
Revised Date :
Page No. : 1/4
PL1084-XXXE3
Features
Dropout Voltage 1.3V at 5A Output Current.
Fast Transient Response.
Extremely Tight Line and Load Regulation.
Current Limiting and Thermal Protection.
Adjustable Output Voltage or Fixed 1.5V, 2.5V,2.85V,3.0V,3.3V,3.5V,5.0V.
Standard 3-Pin Power Packa
ges.
TO-220AB
Description
The PL1084-XXXE3 is a low dropout three terminal regulator with 5A output current capability. The output voltage is
adjustable with the use of a resistor divider or fixed 1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V. Dropout voltage is
guaranteed to be at maximum of 1.2V with the maximum output current. Its low dropout voltage and fast transient response
make it ideal for low voltage microprocessor applications. Current limit and thermal protection provide protection against
any overload condition that would create excessive junction temperatures.
Applications
Mother Board I/O Power Supplies.
Microprocessor Power Supplies.
High Current Regulator.
Post Regulator for Switching Supply.
Typical Application Circuit
Vin=5V
3
Vout=3.3V
2
PL1084-Adj
VREF
1
C1
10μF
ADJ
R1
125Ω
1%
R2
205Ω
1%
C2
10μF
Adjustable Voltage Regulator
Vin=5V
3
2
Vout=3.3V
PL1084-3.3
C1
10μF
1
C2
10μF
Fixed Voltage Regulator
PL1084E3
CYStek Product Specification
CYStech Electronics Corp.
Ordering Information
Device
PL1084-AdjE3
PL1084-1.5E3
PL1084-2.5E3
PL1084-2.85E3
PL1084-3.0E3
PL1084-3.3E3
PL1084-3.5E3
PL1084-5.0E3
Output Voltage
Adjustable
1.5V
2.5V
2.85V
3.0V
3.3V
3.5V
5.0V
Spec. No. : C512E3
Issued Date : 2003.03.25
Revised Date :
Page No. : 2/4
Absolute Maximum Ratings
VIN pin to ADJ/GND pin ……………………………………………………………………………………………….7V
Operating Junction Temperature Range ………………………………………………………………………0°C~ 125°C
Storage Temperature Range………………………………………………………………………………..- 65°C ~ 150°C
Thermal Resistance Junction to Case ……………………………………………………………………………… 3°C /W
Thermal Resistance Junction to Ambient (Assume no ambient airflow, no heatsink) …………………………… 50°C /W
Lead Temperature (Soldering) 10 sec. ……………………………………………………………………………….260°C
Electrical Characteristics
(Vin=5V, Io=10mA,Tj=25℃, unless otherwise noted)
Symbol
V
REF
Parameter
Reference Voltage
Output Voltage
Conditions
Tj=25°C
PL1084-1.5
PL1084-2.5
PL1084-2.85
PL1084-3.0
PL1084-3.3
PL1084-3.5
PL1084-5.0
Adj: 2.65V≤Vin≤7V
Fix: Vout+1.4V≤Vin≤7V
10mA≤Io≤5A
Vin-Vout=3V
Min
1.238
1.48
2.47
2.82
2.97
3.26
3.46
4.95
-
-
5.5
-
-
-
-
-
60
-
Typ
1.250
1.50
2.50
2.85
3.00
3.30
3.50
5.00
0.015
-
6.8
55
0.2
0.5
5
0.003
72
1.2
Max
1.262
1.52
2.53
2.88
3.03
3.34
3.54
5.05
0.2
0.4
-
120
5
-
10
-
-
1.3
Units
V
Vo
V
∆Vo
∆Vo
Is
I
Adj
∆I
Adj
Ts
I
L
VN
RR
V
D
Line Regulation
%
%
A
μ
A
μ
A
%
mA
%
dB
V
Load Regulation
Current Limit
Adjust Pin Current
2.65V≤Vin≤7V
Adjust Pin Current
2.65V≤Vin≤7V, 0°C≤Tj≤125°C
Change
Temperature Stability
Io=0.5A, 0°C≤Tj≤125°C
Minimum Load Current
0°C≤Tj≤125°C
RMS Output Noise(% of
10Hz≤f≤10KHz
Vout)
Vin-Vout=3V, f=120Hz,
Ripple Rejection Ratio
Cout=25
μ
F
Dropout Voltage
∆Vout,∆V
REF
=1%,
10mA≤Io≤5A
0°C≤Tj≤125°C
PL1084E3
CYStek Product Specification
CYStech Electronics Corp.
Block Diagram
Spec. No. : C512E3
Issued Date : 2003.03.25
Revised Date :
Page No. : 3/4
V
IN
Current Amp.
V
REF
1.25V
Thermal
Limit
Current
Limit
V
OUT
55μA
For fixed voltage
device
ADJ
GND
PL1084E3
CYStek Product Specification
CYStech Electronics Corp.
TO-220AB Dimension
Spec. No. : C512E3
Issued Date : 2003.03.25
Revised Date :
Page No. : 4/4
A
D
B
E
C
Marking:
1084-XXX
H
I
G
4
P
M
3
2
1
N
Style: Pin 1.Adj/Gnd 2.Vout3.Vin
4 Vout
K
O
3-Lead TO-220AB Plastic Package
CYStek Package Code: E3
*: Typical
DIM
A
B
C
D
E
G
H
Inches
Min.
Max.
0.2197 0.2949
0.3299 0.3504
0.1732
0.185
0.0453 0.0547
0.0138 0.0236
0.3803 0.4047
-
*
0.6398
Millimeters
Min.
Max.
5.58
7.49
8.38
8.90
4.40
4.70
1.15
1.39
0.35
0.60
9.66
10.28
-
*
16.25
DIM
I
K
M
N
O
P
Inches
Min.
Max.
-
*
0.1508
0.0295 0.0374
0.0449 0.0551
-
*
0.1000
0.5000 0.5618
0.5701 0.6248
Millimeters
Min.
Max.
-
*
3.83
0.75
0.95
1.14
1.40
-
*
2.54
12.70
14.27
14.48
15.87
Notes:
1.Controlling dimension: millimeters.
2.Maximum lead thickness includes lead finish thickness, and minimum lead thickness is the minimum thickness of base material.
3.If there is any question with packing specification or packing method, please contact your local CYStek sales office.
Material:
•
Lead: 42 Alloy ; solder plating
•
Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0
Important Notice:
•
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of CYStek.
•
CYStek reserves the right to make changes to its products without notice.
•
CYStek
semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems.
•
CYStek assumes no liability for any consequence of customer product design, infringement of patents, or application assistance.
PL1084E3
CYStek Product Specification
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